EP1607471B2 - Composition à phases multiples extrudable comprenant, dans chaque phase, un agent structurant inducteur de phase lamellaire - Google Patents

Composition à phases multiples extrudable comprenant, dans chaque phase, un agent structurant inducteur de phase lamellaire Download PDF

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Publication number
EP1607471B2
EP1607471B2 EP05020552.5A EP05020552A EP1607471B2 EP 1607471 B2 EP1607471 B2 EP 1607471B2 EP 05020552 A EP05020552 A EP 05020552A EP 1607471 B2 EP1607471 B2 EP 1607471B2
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Prior art keywords
lamellar
composition according
phase
acid
surfactant
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German (de)
English (en)
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EP1607471B1 (fr
EP1607471A1 (fr
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Shuman Mitra
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Unilever PLC
Unilever NV
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Unilever PLC
Unilever NV
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0216—Solid or semisolid forms
    • A61K8/0233—Distinct layers, e.g. core/shell sticks
    • A61K8/0237—Striped compositions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0295—Liquid crystals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A61K8/442—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0017—Multi-phase liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0026—Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/04—Detergent materials or soaps characterised by their shape or physical properties combined with or containing other objects
    • C11D17/041—Compositions releasably affixed on a substrate or incorporated into a dispensing means
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2003—Alcohols; Phenols
    • C11D3/2006—Monohydric alcohols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2079—Monocarboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2093—Esters; Carbonates
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/59—Mixtures
    • A61K2800/596—Mixtures of surface active compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/10—Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/123—Sulfonic acids or sulfuric acid esters; Salts thereof derived from carboxylic acids, e.g. sulfosuccinates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines

Definitions

  • the present invention relates to extrudable multiphase liquid cleansing compositions of the type typically used in skin cleansing or shower gel compositions which compositions are "structured" lamellar phase compositions.
  • compositions which both provide a cleansing function and a moisturizing benefit are known.
  • WO 90/13283 to Green, et al. discloses compositions comprising an acyl ester of an isethionic acid salt, a long chain fatty acid, a moisturizer component and optional soap.
  • compositions of Chambers, et al comprised a surfactant-containing base formulation and a benefit agent wherein the benefit agent and base formulation were physically separate (not in direct contact) but were nonetheless dispensable from a single packaging means comprising both the base formulation and benefit agent as individual stripes.
  • the stripes had width of at least 1000 microns and base formulation and benefit agent stripes were not post mixed prior to use (compared to EP 468,703 to Unilever where post-mixing is required).
  • Multiphase cleansing and cosmetic compositions which are not segregated in their package are also known.
  • U.S. Pat. No. 5,059,414 issued to Dallal et al. a multi-phase high viscosity cosmetic product containing two or more independent products in a single container, along with simultaneous dispensing, is described.
  • this patent related to isotropic products for the hair, whereas the present invention relates to lamellar liquids for personal care (hand, body and hair).
  • WO 9824399 to Bordat et al. describes highly viscous, separate aqueous and oil phase emulsion compositions which are squeezed out together as a single strand from a tube dispenser for use with the skin, body or hair.
  • the present invention uses lamellar liquids with low shear viscosity values between 80-300 K cps.
  • Lamellar Compositions :
  • spherical, cylindrical (rod-like) or discoidal micelles may form.
  • ordered liquid crystalline phases such as lamellar phase, hexagonal phase or cubic phase may form.
  • the lamellar phase for example, consists of alternating surfactant bilayers and water layers. These layers are not generally flat but fold to form submicron spherical onion like structures called vesicles or liposomes.
  • the hexagonal phase on the other hand, consists of long cylindrical micelles arranged in a hexagonal lattice. In general, the microstructure of most personal care products consist of either spherical micelles; rod micelles; or a lamellar dispersion.
  • micelles may be spherical or rod-like.
  • Formulations having spherical micelles tend to have a low viscosity and exhibit Newtonian shear behaviour (i.e., viscosity stays constant as a function of shear rate; thus, if easy pouring of product is desired, the solution is less viscous and, as a consequence, it doesn't suspend as well). In these systems, the viscosity increases linearly with surfactant concentration.
  • Rod micellar solutions are more viscous because movement of the longer micelles is restricted. At a critical shear rate, the micelles align and the solution becomes shear thinning. Addition of salts increases the size of the rod micelles thereof increasing zero shear viscosity (i.e., viscosity when sitting in bottle) which helps suspend particles but also increases critical shear rate (point at which product becomes shear thinning; higher critical shear rates means product is more difficult to pour).
  • Lamellar dispersions differ from both spherical and rod-like micelles because they can have high zero shear viscosity (because of the close packed arrangement of constituent lamellar droplets), yet these solutions are very shear thinning (readily dispense on pouring). That is, the solutions can become thinner than rod micellar solutions at moderate shear rates.
  • liquid cleansing compositions therefore, there is the choice of using rod-micellar solutions (whose zero shear viscosity, e.g., suspending ability, is not very good and/or are not very shear thinning); or lamellar dispersions (with higher zero shear viscosity, e.g. better suspending, and yet are very shear thinning).
  • rod-micellar solutions whose zero shear viscosity, e.g., suspending ability, is not very good and/or are not very shear thinning
  • lamellar dispersions with higher zero shear viscosity, e.g. better suspending, and yet are very shear thinning.
  • Such lamellar compositions are characterized by high zero shear viscosity (good for suspending and/or structuring) while simultaneously being very shear thinning such that they readily dispense in pouring.
  • Such compositions possess a "heaping", lotion-like appearance which convey signals of enhanced moisturization.
  • lamellar compositions are generally more desirable (especially for suspending emollient and for providing consumer aesthetics), but more expensive in that they generally require more surfactant and are more restricted in the range of surfactants that can be used.
  • rod-micellar solutions When rod-micellar solutions are used, they also often require the use of external structurants to enhance viscosity and to suspend particles (again, because they have lower zero shear viscosity than lamellar phase solutions). For this, carbomers and clays are often used. At higher shear rates (as in product dispensing, application of product to body, or rubbing with hands), since the rod-micellar solutions are less shear thinning, the viscosity of the solution stays high and the product can be stringy and thick. Lamellar dispersion based products, having higher zero shear viscosity, can more readily suspend emollients and are typically more creamy. Again, however, they are generally more expensive to make (e.g., they are restricted as to which surfactants can be used and often require greater concentration of surfactants).
  • lamellar phase compositions are easy to identify by their characteristic focal conic shape and oily streak texture while hexagonal phase exhibits angular fan-like texture.
  • micellar phases are optically isotropic.
  • lamellar phases may be formed in a wide variety of surfactant systems using a wide variety of lamellar phase "inducers" as described, for example, in U.S. Pat. No. 5,952,286 issued to Puvvada, et al.
  • the transition from micelle to lamellar phase are functions of effective average area of headgroup of the surfactant, the length of the extended tail, and the volume of tail.
  • branched surfactants or surfactants with smaller headgroups or bulky tails are also effective ways of inducing transitions from rod micellar to lamellar.
  • One way of characterizing lamellar dispersions include measuring viscosity at low shear rate (using for example a Stress Rheometer) when additional inducer (e.g., oleic acid or isostearic acid) is used. At higher amounts of inducer, the low shear viscosity will significantly increase.
  • inducer e.g., oleic acid or isostearic acid
  • multiphase product is defined herein as the combination of two or more distinct lamellar compositions having viscosities of at least 80,000 cps (T-bar) at 25°C.
  • the viscosity has an upper limit of 300,000 cps at 25°C in order to facilitate filling containers and dispensing with a conventional pump bottle.
  • the lamellar phases may have substantially the same or different compositions, but preferably the phases have similar rheological properties, such as viscosity, etc.
  • the lamellar phases preferably have different colors or other visual differences and preferably are filled vertically or in a pulsating manner in a single container without any partitions, i.e. "partitionless".
  • each phase of the multiphase inventive product should be present in a concentration range of 1 - 99 weight %. In this manner, duality in the case of a two phase system, can be advantageously, economically, and visually communicated through a single, partitionless container.
  • Another advantage of the inventive product is the fact that two or more separate lamellar compositions having specific functions, e.g. cleansing and moisturizing the skin may be simultaneously dispensed in a partitionless container.
  • a further advantage of using a lamellar composition is that elevated amounts of emollients may be added to the formula without affecting product stability.
  • the lamellar phases in the inventive product remain separated (i.e. do not mix) at room temperature for at least 4 months and at high temperature (52°C) (125° F) for at least two weeks.
  • Stability as used herein is therefore defined as the ability of the multiphase lamellar product to maintain the separation of each phase from the other under the above combinations of time and temperature.
  • the present invention relates to stable, extrudable, multiphase aqueous lamellar structured liquid cleansing compositions packaged in a single, partitionless container, wherein the liquid is in a lamellar phase, comprising a surfactant system, preferably a system which contains at least about 5 wt. %, preferably at least about 10 wt. % of surface active compounds.
  • a surfactant system preferably a system which contains at least about 5 wt. %, preferably at least about 10 wt. % of surface active compounds.
  • the inventive composition also includes an amphoteric and/or zwitterionic surfactant.
  • the amphoteric or zwitterionic surfactant, or a blend thereof is present at about 3 to 40 wt. %, more preferably at about 5 to 20 wt. %.
  • the inventive composition also contains at least one anionic surfactant.
  • the anionic surfactant is present at about 3 to 40 wt. %, more preferably at about 5 to 20 wt. %.
  • the inventive composition also contains a lamellar structurant.
  • the lamellar structurant is present at about 0.3 to 15 wt. %, more preferably at about 0.5 to 5 wt. %.
  • Each of the component phases of the inventive multiphase lamellar composition has a low shear viscosity in the range of about 80,000 to 300,000 centipoises (cps) measured at 0.5 RPM using a T-bar spindle A according to the procedure described below.
  • cps centipoises
  • the viscosity ranges from about 100,000 to 200,000 cps and the difference in viscosity between abutting phases is in the range of 0 to 10 % expressed as a relative value.
  • the surfactant system of the subject invention comprises 5 to 60% by weight, preferably 10 to 30% by wt. of the composition and comprises:
  • the anionic surfactant (which may comprise 3 to 40 % by wt. of total composition) may be, for example, an aliphatic sulfonate, such as a primary alkane (e.g., C 8 -C 22 ) sulfonate, primary alkane (e.g., C 8 -C 22 ) disulfonate, C 8 -C 22 alkene sulfonate, C 8 -C 22 hydroxyalkane sulfonate or alkyl glyceryl ether sulfonate (AGS); or an aromatic sulfonate such as alkyl benzene sulfonate, and the like.
  • a primary alkane e.g., C 8 -C 22
  • primary alkane e.g., C 8 -C 22
  • disulfonate C 8 -C 22 alkene sulfonate
  • the anionic may also be an alkyl sulfate (e.g., C 12 -C 18 alkyl sulfate) or alkyl ether sulfate (including alkyl glyceryl ether sulfates), and the like.
  • alkyl ether sulfates are those having the formula: RO(CH 2 CH 2 O) n SO 3 M wherein R is an alkyl or alkenyl having 8 to 18 carbons, preferably 12 to 18 carbons, n has an average value of greater than 1.0, preferably between 2 and 3; and M is a solubilizing cation such as sodium, potassium, ammonium or substituted ammonium. Ammonium and sodium lauryl ether sulfates are preferred.
  • the anionic may also be selected from alkyl sulfosuccinates (including mono- and dialkyl, e.g., C 6 -C 22 sulfosuccinates); alkyl and acyl taurates, alkyl and acyl sarcosinates, sulfoacetates, C 8 -C 22 alkyl phosphates and phosphates, alkyl phosphate esters and alkoxyl alkyl phosphate esters, acyl lactates, C 8 -C 22 monoalkyl succinates and maleates, sulphoacetates, and acyl isethionates, and the like.
  • alkyl sulfosuccinates including mono- and dialkyl, e.g., C 6 -C 22 sulfosuccinates
  • alkyl and acyl taurates alkyl and acyl sarcosinates
  • sulfoacetates C
  • Sulfosuccinates may be monoalkyl sulfosuccinates having the formula: R 4 O 2 CCH 2 CH(SO 3 M)CO 2 M; amido-MEA sulfosuccinates of the formula R 4 CONHCH 2 CH 2 O 2 CCH 2 CH(SO 3 M)CO 2 M wherein R 4 ranges from C 8 -C 22 alkyl and M is a solubilizing cation; amido-MIPA sulfosuccinates of the formula R 4 CONH(CH 2 )CH(CH 3 ) (SO 3 M)CO 2 M wherein R 4 and M are as defined above.
  • Sarcosinates are generally indicated by the formula RCON(CH 3 )CH 2 CO 2 M, wherein R ranges from C 8 to C 20 alkyl and M is a solubilizing cation.
  • Taurates are generally identified by the formula R 2 CONR 3 CH 2 CH 2 SO 3 M wherein R 2 ranges from C 8 -C 20 alkyl, R 3 ranges from C 1 -C 4 alkyl and M is a solubilizing cation.
  • Another class of anionics are carboxylates such as follows: R-(CH 2 CH 2 O) n CO 2 M wherein R is C 8 to C 20 alkyl; n is 0 to 20; and M is as defined above.
  • amido alkyl polypeptide carboxylates such as, for example, Monteine LCQ (R) by Seppic.
  • C 8 -C 18 acyl isethionates are the C 8 -C 18 acyl isethionates. These esters are prepared by reaction between alkali metal isethionate with mixed aliphatic fatty acids having from 6 to 18 carbon atoms and an iodine value of less than 20. At least 75% of the mixed fatty acids have from 12 to 18 carbon atoms and up to 25% have from 6 to 10 carbon atoms.
  • Acyl isethionates when present, will generally range from about 0.5-15% by weight of the total composition. Preferably, this component is present from about 1 to about 10% by weight of the total composition.
  • the acyl isethionate may be an alkoxylated isethionate such as is described in U.S. Patent No. 5,393,466 , to Ilardi et al..
  • This compound has the general formula: wherein R is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are hydrogen or an alkyl group having 1 to 4 carbons and M + is a monovalent cation such as, for example, sodium, potassium or ammonium.
  • Zwitterionic surfactants are exemplified by those which may be broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate.
  • R 2 is an alkyl, alkenyl, or hydroxy alkyl radical containing from about 8 to about 18 carbon atoms, from 0 to about 10 ethylene oxide moieties and from 0 to about 1 glyceryl moiety
  • Y is selected from nitrogen, phosphorus, and sulfur atoms
  • R 3 is an alkyl or monohydroxyalkyl group containing about 1 to about 3 carbon atoms
  • X is 1 when Y is a sulfur atom, and 2 when Y is a nitrogen or phosphorus atom
  • R 4 is an alkylene or hydroxyalkylene of from about 1 to about 4 carbon atoms and Z is a radical selected from carboxylate, sulfonate, sulfate, phosphonate, and phosphate groups.
  • surfactants examples include:
  • Amphoteric detergents which are suitable for the present invention include at least one acid group. This may be a carboxylic or a sulphonic acid group. They include quaternary nitrogen and therefore are quaternary amido acids. They should generally include an alkyl or alkenyl group of 7 to 18 carbon atoms and usually comply with an overall structural formula: wherein R 1 is an alkyl or alkenyl group having 7 to 18 carbon atoms; R 2 and R 3 are each independently alkyl, hydroxyalkyl or a carboxyalkyl groups having 1 to 3 carbon atoms; n is 2 to 4; m is 0 to 1; X is an alkylene group having 1 to 3 carbon atoms optionally substituted with hydroxyl, and Y is -CO 2 - or -SO 3 -
  • Suitable amphoteric detergents within the above general formula include simple betaines of formula: and amido betaines of formula: wherein m is 2 or 3.
  • R 1 , R 2 and R 3 are as defined previously.
  • R 1 may, in particular, be a mixture of C 12 and C 14 alkyl groups derived from coconut so that at least half, preferably at least three quarters of the groups R 1 have 10 to 14 carbon atoms.
  • R 2 and R 3 are preferably methyl.
  • a suitable betaine is cocoamidopropyl betaine.
  • amphoteric detergent is a sulphobetaine of formula or where m is 2 or 3, or variants of these in which -(CH 2 ) 3 SO - 3 is replaced by
  • R 1 , R 2 and R 3 are as discussed previously.
  • Amphoacetates and diamphoacetates are also intended to be covered in possible zwitterionic and/or amphoteric compounds which may be used, especially C8 - C20 amphoacetates or mixtures thereof, and the like.
  • a suitable amphoacetate is sodium laurylamphoacetate.
  • the amphoteric/zwitterionic surfactant generally comprises 3 to 30%, preferably 5 to 20% by weight, more preferably 10 to 20% by weight of the composition.
  • a preferred surfactant system of the invention comprises the following:
  • the surfactant system may also optionally comprise a nonionic surfactant.
  • Suitable nonionic surfactants include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • Specific nonionic detergent compounds are alkyl (C 6 -C 22 ) phenols-ethylene oxide condensates, the condensation products of aliphatic (C 8 -C 18 ) primary or secondary, linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.
  • Other so-called nonionic detergent compounds include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides, and the like.
  • the nonionic may also be a sugar amide, such as a polysaccharide amide.
  • the surfactant may be one of the lactobionamides described in U.S. Patent No. 5,389,279 to Au et al. or it may be one of the sugar amides described in Patent No. 5,009,814 to Kelkenberg .
  • Preferred alkyl polysaccharides are alkylpolyglycosides of the formula R 2 O(C n H 2n O) t (glycosyl) x wherein R 2 is selected from alkyl, alkylphenyl, hydroxyalkyl, hydroxyalkylphenyl, and mixtures thereof in which the alkyl groups contain from about 10 to about 18, preferably from about 12 to about 14, carbon atoms; n is 0 to 3, preferably 2; t is from 0 to about 10, preferably 0; and x is from 1.3 to about 10, preferably from 1.3 to about 2.7.
  • the glycosyl is preferably derived from glucose.
  • the alcohol or alkylpolyethoxy alcohol is formed first and then reacted with glucose, or a source of glucose, to form the glucoside (attachment at the 1-position).
  • the additional glycosyl units can then be attached between their 1-position and the preceding glycosyl units 2-, 3-, 4- and/or 6-position, preferably predominantly the 2-position.
  • the nonionic surfactant generally comprises 3 to 40% by wt. of the composition, preferably 0 to 10% by wt. of the composition.
  • compositions of the invention utilize about 0.3% to 15% by wt., preferably 0.5 to 10% by wt., more preferably 0.5 to 5% by wt. of a structuring agent in each phase which functions in the compositions to form a lamellar phase.
  • the lamellar phase enables the compositions to suspend particles more readily (e.g., emollient particles) while still maintaining good shear thinning properties.
  • the lamellar phase also provides consumers with desired rheology ("heaping").
  • the structurant is a fatty acid or ester derivative thereof, or trihydroxystearin. More preferably the structurant is selected from lauric or isostearic acid, or trihydroxystearin.
  • Suitable examples of fatty acids include C 10 -C 22 acids such as the following: lauric acid, oleic acid, isostearic acid, linoleic acid, linolenic acid, ricinoleic acid, elaidic acid, arichidonic acid, myristoleic acid and palmitoleic acid, and the like.
  • Ester derivatives include propylene glycol isostearate, propylene glycol oleate, glyceryl isostearate, glyceryl oleate and polyglyceryl diisostearate, and the like.
  • One of the principle benefits of the invention is the ability to suspend oil/emollient particles in one or more lamellar phases in the multiphase composition.
  • the following oil/emollients may optionally be suspended in the compositions of the invention.
  • Vegetable oils Arachis oil, castor oil, cocoa butter, coconut oil, corn oil, cotton seed oil, olive oil, palm kernel oil, rapeseed oil, safflower seed oil, sesame seed oil and soybean oil, and the like.
  • Esters Butyl myristate, cetyl palmitate, decyloleate, glyceryl laurate, glyceryl ricinoleate, glyceryl stearate, glyceryl isostearate, hexyl laurate, isobutyl palmitate, isocetyl stearate, isopropyl isostearate, isopropyl laurate, isopropyl linoleate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, propylene glycol monolaurate, propylene glycol ricinoleate, propylene glycol stearate, and propylene glycol isostearate, and the like.
  • Animal Fats acetylated lanolin alcohols, lanolin, lard, mink oil and tallow, and the like.
  • oil/emollients include mineral oil, petrolatum, silicone oil such as dimethyl polysiloxane, lauryl and myristyl lactate, fatty acid oils, triglycerides, glycerin, and the like.
  • the emollient/oil is generally used in an amount from about 0 to 70%, preferably 5 to 40% by wt. of the phase in which it is to be found. Generally, it should comprise no more than 70% of such phase.
  • a portion of the emollient may be present in the form of solid or semi-solid beads. The beads are used in an amount from about 0 to 10%, preferably 0 to 5% of the phase.
  • multiphase lamellar compositions of the invention may include optional ingredients as follows:
  • compositions may further comprise antimicrobials such as 2-hydroxy-4,2'4'-trichlorodiphenylether(DP3000); preservatives such as dimethyloldimethylhydantoin (Glydant XL1000), parabens, sorbic acid etc.
  • antimicrobials such as 2-hydroxy-4,2'4'-trichlorodiphenylether(DP3000); preservatives such as dimethyloldimethylhydantoin (Glydant XL1000), parabens, sorbic acid etc.
  • compositions may also comprise coconut acyl mono- or diethanol amides and the like as suds boosters.
  • Antioxidants such as, for example, butylated hydroxytoluene (BHT) may be used advantageously in amounts of about 0.01% or higher if appropriate.
  • BHT butylated hydroxytoluene
  • Cationic conditioners which may be used include Quatrisoft LM-200 Polyquaternium-24, Merquat Plus 3330 - Polyquaternium 39; and Jaguar (R) type conditioners.
  • deflocculating polymers such as are taught in U.S. Patent No. 5,147,576 to Montague .
  • exfoliants such as polyoxyethylene beads, walnut sheets and apricot seeds, and the like.
  • PH and viscosity adjusters may be used such as citric acid, glycolic acid, lactic acid, other alpha or beta hydroxy acids, and the like.
  • the multiphase compositions of the invention are lamellar compositions.
  • the lamellar phase comprises 20 to 80%, preferably 30 to 65% of the total phase volume of each phase.
  • the phase volume may be measured, for example, by conductivity measurements or other measurements which are well known to those skilled in the art. While not wishing to be bound by theory, higher phase volume is believed to provide better suspension of emollients.
  • Examples 1 - 4 are inventive compositions having two lamellar phases, denoted stripe A and stripe B. All the compositions found to remain separated (i.e. did not mix) at roo temperature for at least 4 months and at high temperature (52° C) (125° F) for at least two weeks. The compositions were held in a transparent PET container. The dispensed product in all cases was found to contain each stripe in the range of 1 - 99 weight %.
  • This method covers the measurement of the viscosity of the finished product.

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Claims (12)

  1. Composition nettoyante liquide aqueuse stable et extrudable à phases multiples et à structure lamellaire conditionnée dans un unique récipient sans cloisonnement, la composition comprenant :
    au moins deux phases aqueuses à structure lamellaire contiguës ;
    les phases à structure lamellaire comprenant un système tensioactif comprenant :
    un tensioactif choisi parmi un tensioactif amphotère, zwitterionique ou leurs mélanges ;
    un tensioactif anionique ; et
    un structurant lamellaire présent dans chaque phase lamellaire de la composition liquide, choisi parmi les acides gras, les esters gras et la trihydroxystéarine ;
    dans laquelle le système tensioactif comprend 5 % à 60 % en poids de la composition, et
    dans laquelle chacune des phases lamellaires présente une valeur de viscosité minimale à faible cisaillement de 80 k cps à 25 °C, mesurée à 0,5 0,5 Tr/minute au moyen d'un viscosimètre RVT Brookfield, tige A de type barre en T.
  2. Composition selon la revendication 1, dans laquelle chaque phase lamellaire présente une viscosité maximales à faible cisaillement de 300 k cps à 25 °C, mesurée à 0,5 Tr/minute au moyen d'un viscosimètre RVT Brookfield, tige A de type barre en T.
  3. Composition selon la revendication 1 ou la revendication 2, dans laquelle deux phases lamellaires sont présentes.
  4. Composition selon l'une quelconque des revendications précédentes, dans laquelle chacune des phases lamellaires présente une valeur de viscosité à faible cisaillement entre 100 k et 200 k cps à 25 °C, mesurée à 0,5 Tr/minute au moyen d'un viscosimètre RVT Brookfield, tige A de type barre en T.
  5. Composition selon l'une quelconque des revendications précédentes, dans laquelle la concentration du tensioactif amphotère se situe dans la plage allant d'environ 3 à 30 pour cent en poids.
  6. Composition selon l'une quelconque des revendications précédentes, dans laquelle la concentration du tensioactif anionique se situe dans la plage allant d'environ 3 à 40 pour cent en poids.
  7. Composition selon l'une quelconque des revendications précédentes, dans laquelle la concentration du tensioactif non ionique se situe dans la plage allant d'environ 3 à 40 pour cent en poids.
  8. Composition selon l'une quelconque des revendications précédentes, dans laquelle la concentration en émollient dans chaque phase se situe dans la plage allant d'environ 0 à 70 pour cent en poids.
  9. Composition selon l'une quelconque des revendications précédentes, dans laquelle la concentration du structurant lamellaire dans chaque phase se situe dans la plage allant d'environ 0,3 à 15 pour cent en poids.
  10. Composition selon l'une quelconque des revendications précédentes, dans laquelle le tensioactif amphotère ou zwitterionique dans chaque phase est choisi parmi la cocamidopropyl bétaïne ou un sel de métal alcalin d'amphoacétate d'alkyle.
  11. Composition selon l'une quelconque des revendications précédentes, dans laquelle le tensioactif anionique est choisi parmi un alkyl éther sulfate de métal alcalin ou d'ammonium, un alkyl sarcosinate de métal alcalin ou d'ammonium, un alkyl sulfosuccinate de métal alcalin ou d'ammonium et un alkyl sulfate de métal alcalin ou d'ammonium.
  12. Composition selon l'une quelconque des revendications précédentes, dans laquelle le structurant lamellaire est choisi parmi l'acide laurique, l'acide isostéarique, la trihydroxystéarine, l'acide de palmiste, l'acide caprique, l'acide oléique et l'acide caprylique.
EP05020552.5A 2000-03-20 2001-03-05 Composition à phases multiples extrudable comprenant, dans chaque phase, un agent structurant inducteur de phase lamellaire Expired - Lifetime EP1607471B2 (fr)

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BR0109406A (pt) 2003-03-18
MXPA02009245A (es) 2003-03-12
BRPI0109406B1 (pt) 2016-03-01
EP1265981A1 (fr) 2002-12-18
JP2003528113A (ja) 2003-09-24
ZA200207067B (en) 2003-10-20
WO2001070926A1 (fr) 2001-09-27
EP1607471B1 (fr) 2009-11-25
CA2402399A1 (fr) 2001-09-27
CN1230517C (zh) 2005-12-07
EP1607471A1 (fr) 2005-12-21
CN1429264A (zh) 2003-07-09
DE60140633D1 (de) 2010-01-07
US6534457B2 (en) 2003-03-18
US20020010111A1 (en) 2002-01-24
HK1054962A1 (en) 2003-12-19
ATE449833T1 (de) 2009-12-15
CA2402399C (fr) 2009-12-22
AU2001240677B2 (en) 2004-04-22
AU4067701A (en) 2001-10-03

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